This Ancient Asteroid Strike Was More Insane Than We Realized

Around 3.26 billion years ago — long before the dinosaurs — a massive asteroid measuring nearly 36 miles (58 km) across smashed into the Earth. Geologists have now reconstructed this cataclysmic event, and it was far, far bigger than we thought. Here's how things went down on that fateful day. » 4/10/14 12:00pm 4/10/14 12:00pm

Remarkable footage of a volcanic eruption, as seen from space

On June 12, 2009, Russia's Sarychev Volcano erupted in spectacular fashion, issuing plumes of ash skyward in a phenomenal display of geophysical force. It was the first time Sarychev had erupted in over twenty years – and it happened, rather serendipitously, just as the International Space Station was flying overhead. » 1/30/14 12:44pm 1/30/14 12:44pm

The Dramatic Expanse of Antarctica's Noctilucent Clouds

It's summer at the South Pole, which means it's time for the frozen continent's noctilucent clouds to make an appearance. But over the last several decades, these beautiful electric blue clouds have been appearing earlier than usual — and they're getting bigger. It's yet another example of climate change at work. » 12/26/13 11:30am 12/26/13 11:30am

MASSIVE Louisiana Sinkhole Devours Whole Trees in Seconds Flat

In the Southern Louisiana town of Bayou Corne, a monster is growing. For over a year now, a colossal sinkhole – which, when last measured, spanned a grotesque 24 acres – has been wreaking havoc on not only local residents (who have been forced to evacuate), but the environment under which it lurks, as this recently… » 8/22/13 10:05am 8/22/13 10:05am

What will really happen when the Yellowstone supervolcano erupts?

Lurking beneath Yellowstone National Park is a massive underground reservoir of magma, capped by the park's famous caldera. 640,000 years ago, a super eruption rocked the region. What would happen if another such event blasted the park today? We asked USGS geologist Jake Lowenstern, scientist-in-charge of the… » 5/17/13 2:32pm 5/17/13 2:32pm